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All Journal KESANS : International Journal of Health and Science
Ajwah Ulya Sahira
Department of Biology, Faculty of Mathematics and Natural Sciences, Universitas Negeri Malang, Indonesia
Chemistry Health Professions Medicine & Pharmacology Physics Public Health

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Inheritance of the ebony Trait in Drosophila Melanogaster through Reciprocal Crosses Najmadina Aulia Hanifa; Talita Dwi Ardiningrum; Alya Galuh Kirana; Ajwah Ulya Sahira; Muslih Munadi Amin; Muhamad Justitia Ramadhan
Jurnal KESANS : Kesehatan dan Sains Vol 5 No 10 (2026): KESANS: International Journal of Health and Science
Publisher : Rifa'Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54543/kesans.v5i10.678

Abstract

Introduction: Mendel’s First Law states that allele pairs segregate during gamete formation, producing predictable inheritance patterns. The ebony body-color mutation in Drosophila melanogaster is a useful model for studying Mendelian inheritance. Objective: This study aimed to verify the segregation pattern of the ebony trait and determine whether its inheritance is autosomal or sex-linked. Method: A Completely Randomized Design with two reciprocal crossing treatments, female normal × male ebony and female ebony × male normal, was conducted from February to April 2026. Second-generation offspring were classified into normal and ebony phenotypes and analyzed using the Chi-square test. Result and Discussion: The female normal × male ebony cross produced 354 normal and 116 ebony individuals, yielding a ratio of 3.05:1. The reciprocal cross produced 578 normal and 195 ebony individuals with a ratio of 2.96:1. All Chi-square values were lower than 3.84, indicating agreement with the expected 3:1 ratio. Similar results from both reciprocal crosses indicate that inheritance of the trait is independent of parental sex. Conclusion: The ebony trait in Drosophila melanogaster is inherited as an autosomal recessive allele in accordance with Mendel’s First Law of Segregation
Co-Authors Alya Galuh Kirana Muhamad Justitia Ramadhan Muslih Munadi Amin Najmadina Aulia Hanifa Talita Dwi Ardiningrum